Just purchased and downloaded the Grace J4 template. I have been a J51 customer for many, many years, so I understand the process for installing the demo template files, and have successfully done so until this point. I'm getting an error message "0 Call to a member function load() on null" and changing the PHP version to an older version doesn't help (though I wouldn't really want that to be the solution).

The database was created and user access is set to "all privileges"

The hosting plan was just purchased, so it's a completely new site – I'm not trying to install over, or upgrade another running site.

I've attached a screenshot of the error message I'm getting.